MIAMI (Reuters) - Tropical Storm Danielle formed over the open Atlantic far from land on Sunday and could become a hurricane by Tuesday night, the U.S. National Hurricane Center said.
Danielle, the fourth named storm of the 2010 Atlantic hurricane season, was located 725 miles west of the southernmost Cape Verde Islands and was moving northwest at 23 miles per hour (19 km per hour).
It carried top sustained winds of 40 miles per hour (65 km per hour) and was forecast to strengthen slowly over the next few days. It would become a hurricane if its top winds reach 74 mph (119 km per hour).
Danielle posed no threat to land or energy interests and was expected to eventually curve more to the north on a path that would keep it over open seas at least through Friday, forecasters at the hurricane center in Miami said.
Reporting by Jane Sutton; editing by Chris Wilson